/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "third_party/blink/renderer/platform/wtf/cross_thread_copier.h"

#include <memory>
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace WTF {

CrossThreadCopier<String>::Type CrossThreadCopier<String>::Copy(
    const String& str) {
  return str.IsolatedCopy();
}

// Test CrossThreadCopier using static_assert.

// Verify that ThreadSafeRefCounted objects get handled correctly.
class CopierThreadSafeRefCountedTest
    : public ThreadSafeRefCounted<CopierThreadSafeRefCountedTest> {};

// Add a generic specialization which will let's us verify that no other
// template matches.
template <typename T>
struct CrossThreadCopierBase<T, false> {
  typedef int Type;
};

static_assert((std::is_same<scoped_refptr<CopierThreadSafeRefCountedTest>,
                            CrossThreadCopier<scoped_refptr<
                                CopierThreadSafeRefCountedTest>>::Type>::value),
              "RefPtr + ThreadSafeRefCounted should pass CrossThreadCopier");
static_assert(
    (std::is_same<
        int,
        CrossThreadCopier<CopierThreadSafeRefCountedTest*>::Type>::value),
    "Raw pointer + ThreadSafeRefCounted should NOT pass CrossThreadCopier");

// Verify that RefCounted objects only match our generic template which exposes
// Type as int.
class CopierRefCountedTest : public RefCounted<CopierRefCountedTest> {};

static_assert(
    (std::is_same<int, CrossThreadCopier<CopierRefCountedTest*>::Type>::value),
    "Raw pointer + RefCounted should NOT pass CrossThreadCopier");

// Verify that std::unique_ptr gets passed through.
static_assert(
    (std::is_same<std::unique_ptr<float>,
                  CrossThreadCopier<std::unique_ptr<float>>::Type>::value),
    "std::unique_ptr test");

}  // namespace WTF
